Answer:
I'm thinking it's Associative or Identity property(preferably Associative) but I'm not sure
Step-by-step explanation:
Education is important, don't cheat <3
search up the different properties and Associative makes sense more with Step 2!
Well if finding X you get 4,-7 when you simplify the whole equation you get that as well.
Answer:
x = 2
y = 1
Step-by-step explanation:
3x - y = 5..............(1)× 1
2x + y = 5...….......(2)× 1
3x - y = 5..............(3)
2x + y = 5.............(4)
Cancel y
3x + 2x = 5 + 5
5x = 10
Divide both sides by 5
x = 2
Substitute for the value of y
3x - y = 5
3(2) - y = 5
6 - y = 5
6 - 5 = y
1 = y
y = 1